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Forum: OpenFOAM Running, Solving & CFD March 6, 2020, 13:43
Replies: 23
Views: 3,578
Posted By adhiraj
I don't get what is so hard to understand here....

I don't get what is so hard to understand here. Here's what I mean:

At any time level n, you have a velocity \mathbf{u}^{n}, and a pressure p^{n}. At time t = 0, \mathbf{u}^{n} and p^{n} are...
Forum: OpenFOAM Running, Solving & CFD March 6, 2020, 11:05
Replies: 23
Views: 3,578
Posted By adhiraj
There seem to be no implicit operators that can...

There seem to be no implicit operators that can produce the velocity-equation matrix for your case, which is making the job hard.

Here is a thought: instead of solving an equation for \mathbf{u},...
Forum: OpenFOAM Running, Solving & CFD March 4, 2020, 14:33
Replies: 23
Views: 3,578
Posted By adhiraj
You are not thinking clearly here. You are...

You are not thinking clearly here.

You are creating the fvVectorMatrix in a way that makes dummy as the unknown, and then expecting to obtain U from the system. It does not work that way.

When...
Forum: OpenFOAM Running, Solving & CFD January 20, 2020, 13:36
Replies: 23
Views: 3,578
Posted By adhiraj
[/QUOTE] You are right, I meant to write...

[/QUOTE]

You are right, I meant to write grad instead of div.



I'm not sure I understand what you want to do here.

I was trying to point out that your equations are not standard...
Forum: OpenFOAM Running, Solving & CFD January 18, 2020, 15:50
Replies: 23
Views: 3,578
Posted By adhiraj
Wait a minute! Your velocity equations look like...

Wait a minute! Your velocity equations look like they have been derived using the curl operator, and not the gradient operator.

Using fvm::div(s) gives you the full gradient vector or matrix...
Forum: OpenFOAM Running, Solving & CFD January 17, 2020, 18:39
Replies: 23
Views: 3,578
Posted By adhiraj
Now we are making a little progress, but a couple...

Now we are making a little progress, but a couple of issues still remain.



The name is not important; you did not name the matrix for p, but simply created and passed the fvMatrix object to the...
Forum: OpenFOAM Running, Solving & CFD January 17, 2020, 14:50
Replies: 23
Views: 3,578
Posted By adhiraj
I am happy to help, but instead of posting the...

I am happy to help, but instead of posting the same question over and over again, you need to spend a little time to understand the responses and then you will arrive at a solution to your problem...
Forum: OpenFOAM Running, Solving & CFD January 17, 2020, 13:02
Replies: 23
Views: 3,578
Posted By adhiraj
You have posted essentially the same question in...

You have posted essentially the same question in three different threads now. I am sure that this is against forum etiquette, is kind of annoying, and will likely not get you help any faster.

You...
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